What are some alternatives to the code provided for a like and dislike system in PHP?

One alternative to the provided code for a like and dislike system in PHP is to use AJAX to handle the like and dislike functionality without refreshing the page. This can improve the user experience by making the interaction more seamless and responsive. 

// AJAX script to handle like and dislike functionality

// HTML file
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
    $('.like').click(function(){
        var postId = $(this).data('post-id');
        $.ajax({
            type: 'POST',
            url: 'like.php',
            data: { postId: postId, action: 'like' },
            success: function(data){
                // Update UI to show that the post has been liked
            }
        });
    });

    $('.dislike').click(function(){
        var postId = $(this).data('post-id');
        $.ajax({
            type: 'POST',
            url: 'like.php',
            data: { postId: postId, action: 'dislike' },
            success: function(data){
                // Update UI to show that the post has been disliked
            }
        });
    });
});
</script>

// like.php file
<?php
if(isset($_POST['postId']) && isset($_POST['action'])){
    $postId = $_POST['postId'];
    $action = $_POST['action'];

    // Perform like or dislike action based on $action and $postId
    // Update database accordingly
}
?>

Keywords

MySQL AJAX jQuery PDO SQL Injection

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